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- 1. Function
-
- The function must be in terms of x
- only: f(x).
-
- It can contain:
-
- - The variable x
- - Any real or integer constant
- - p (for PI)
- - e (for 2.7182818)
- - Any function abreviation listed in
- the function dialogue box
-
- The function must be entered in POSTFIX
- notation. i.e.: you can view the
- function as being evaluated from left to
- right. And each time a number or a
- variable is read, it is placed on top of a
- stack. And each time an operator is read
- it is applied to the last two or one
- numbers placed on the stack. Then the
- result of the operation is placed on top
- of the stack. This method is identical
- to the one used some scientific
- calculators. There must be at least one
- space character between each element of
- the function.
-
- examples:
-
- __________________________________
- infix | postfix
- _________________|________________
- (3x + 2) | 3 x * 2 +
- _________________|________________
- x raised |
- to the power |
- of 3 | x 3 ^
- _________________|________________
- sin(x+2) | x 2 + s
- _________________|________________
- abs(cos(3*x)) | x 3 * c a
- _________________|________________
- -x | x -1 *
- _________________|________________
- x modulo 5 | x 5 m
- _________________|________________
-
- Note: To obtain -x, multiply x by -1
-
- __________________________________________
-
- 2. Interval
-
- xa,xb,ya,yb can be any real number where
- xa < xb and ya < yb
-
- The numbers can be in decimal or exponential
- notation.
-
- examples of valid numbers: 2
- 34.99875
- 2.1E-10
-
- ___________________________________________
-
- 3. Wider
-
- This menu option will enlarge the x and y
- range by a factor of two
-
- ___________________________________________
-
- 4. Zoom
-
- This menu option permits to restrict
- the graphic interval. Press the left mouse
- button and drag the mouse while holding the
- button.
-
- ___________________________________________
-
- 5. Superimpose, New
-
- Superimpose will draw the current function
- without erasing the screen. New erases
- before drawing.
-
- ___________________________________________
- 6. Printing
-
- A graphic can be printed by copying it to
- the clipboard with the copy option in the
- menu and then pasting it in a graphics
- package such as Micrografix Designer or
- Windows Paint. From there, the graphic can
- be sent to the printer.
-
- a: Draw your graph
- b: Select the copy option in Mathgraf
- c: Open your graphics package
- (for example Paint)
- d: Select the paste option in the edit
- menu of Paint.
- e: Modify the drawing or print it as it
- is.
-
- ___________________________________________
-
- 7. Copy
-
- This option copies the current graphic
- window to the clipboard. The contents of the
- clipboard can then be pasted in other Windows
- graphics programs.
- _____________________________________________
-
- 8. Origin
-
- This function will redraw the current graphic
- without changing the interval size but centered
- at the origin.
-
- ______________________________________________
-
- 9. Save, Save as, Open
-
- These functions will save or load a graphics
- definition file containing up to ten distinct
- curves.
- ______________________________________________
-
- 10. Coordinates
-
- The current coordinates of the mouse pointer
- are displayed on the screen.
- ______________________________________________